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Rifles, Reloading, Optics, Equipment
Reloading
.223 vs. 5.56
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<blockquote data-quote="Doom2" data-source="post: 2799965" data-attributes="member: 108323"><p>[USER=107965]@Ol' Red[/USER] </p><p></p><p>Unfortunately it's a misconception that 223/5.56 military brass is different. The 223 Remington cartridge case is the same cartridge case as the 5.56 and 5.56x45 NATO. It was developed for the fully automatic M16. The source of the misconception is from the 30-06 and the M1. That cartridge was developed for a bolt action rifle in 1903 and modified in 06. Military brass for the 30-06 is heavier and has thicker walls as it needs to withstand the violent extraction of the cartridge while the barrel is still under pressure without tearing the rim off or separating the case. The 308 cases are somewhat the same case as the cartridge was designed for the M14. The big difference in case capacities occurred when Winchester was awarded a contract for Palma ammunition. They scolloped the base (balloon head) to increase capacity of the brass and the result was about a 2 grain H20 increase in capacity.</p></blockquote><p></p>
[QUOTE="Doom2, post: 2799965, member: 108323"] [USER=107965]@Ol' Red[/USER] Unfortunately it's a misconception that 223/5.56 military brass is different. The 223 Remington cartridge case is the same cartridge case as the 5.56 and 5.56x45 NATO. It was developed for the fully automatic M16. The source of the misconception is from the 30-06 and the M1. That cartridge was developed for a bolt action rifle in 1903 and modified in 06. Military brass for the 30-06 is heavier and has thicker walls as it needs to withstand the violent extraction of the cartridge while the barrel is still under pressure without tearing the rim off or separating the case. The 308 cases are somewhat the same case as the cartridge was designed for the M14. The big difference in case capacities occurred when Winchester was awarded a contract for Palma ammunition. They scolloped the base (balloon head) to increase capacity of the brass and the result was about a 2 grain H20 increase in capacity. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.223 vs. 5.56
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